Feb. 19, 2013
6:58 p.m.
On Tue, Feb 19, 2013 at 7:20 PM, David Shwatrz <dshwatrz@gmail.com> wrote:
Hi, kernel newbies,
We have: #define cpu_relax() asm volatile("rep; nop") in arch/x86/boot/boot.h.
Why don't we use the PAUSE assembler instruction here ?
Just guessing, maybe rep+nop could do better power saving because processor is considered as idle. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com